update readme with correct input parameters

[h920032]

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Pull request details

• Please check if the PR fulfills these requirements

• The commit message/s explain/s all the changes clearly
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

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• Bug fix
• Added feature
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• What is the current behavior? (You can also link to an open issue here)

• What is the new behavior? (if this is a feature change)

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_{Note 1: Make sure to add all the information needed to understand the bug so that someone can help. If any essential information is missing we'll add the 'Needs more information' label and close the issue until there is enough information.}

_{Note 2: For support questions (for example, tutorials on how to use the library), please use the Arduino Forums. This repository's issues are reserved for feature requests and bug reports.}

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